Pneumatic motor.



T. A. DELANEY.

PNEUMATIC MOTOR.

APPLICATION FILED JAN. 11, 1912.

1,078,598. Patented Nov. 11, 1913.

2 SHEETE SHEET 1.-

T. A. DELANBY.

PNEUMATIC MOTOR.

APPLICATION TILED JAN. 11, 1912. 1,078,598., Patented Nov. 11,1913.

2 SHBETSSHBET 2.

. Vii 224 THOMAS A. nnnnlvnv, or cnrcneo, rumors,

ASSIGNOR, TO HILLS-MQGANNA (30., A.

CORPORATION OF ILLINOIS.

PNEUMATIC MOTOR.

Epecification of Letters Patent.

Patented Nov. 1 1, 1913.

Application filed January 11, 1912. Serial No. 670,541.

To all whom it mag concern Be it known that LTI-IoMAs A. DELANEY, a citizenvof the United States, and a resident of the city-of Chicagofln the county of Cook and State of Illinois, have invented certain new and useful Improvements in Pneumatic Motors; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the numbers of reference marked thereon, which form a part of this specification.

This invention relates to improvements in air motors, and is shown more particularly as an air motor adapted to drive a force feed lubricator.

Force feed lubrioators (extensively used for lubricating steam engines and for many other purposes) have been previously driven from some moving part of the mechanism to be lubricated, and, owing to the various constructions of engines, it has been verv often impossible to operatively install the" same at minimum cost and still obtain their maximum efliciency.

It is an important object of this invention to provide an air motor adapted to be connected in an air or steam line to effectually drive a force feed lubricator independently of any moving part of the mechanism to be lubricated.

It is also an object of my invention to afford a device of the class described of exceedmglycheap, simple and durable construction and occupying but a small space upon the mechanism to be lubricated.

In the drawings: Figure 1 is a front elevation of a device embodying my invention, showing the same connected with a force feed lubricator. Fig. 2 is a side elevation of the same. Fig. 3 is a vertical section of a device embodying my invention. VFig. t is a fragmentary section taken on line H of Fig. 3. Fig. 5 is a view shown partly in section taken on line 5-5 of Fig. 3. Fig. 6 is a plan view of the lower head of the piston. Fig. 7 is a section taken on line 7-7 of Fig. 4. Fig. 8 is a section taken on 1ine6-8 of Fig. 4.

of their elasticity.

. transverse passage 24, and piston are As shown in said drawings :1 The lubricater tank 1, and the pump 2, sight feed 3, pump shaft 41, and crank5, are substantially the construction shown in the patent for lubricator, No. 659,166, issued to T. A. Delaney and R. T. McCanna on the 2nd of October, 1900. The pump. journaled upon, and extends yond a bracket 6, which is cured upon the tank 1. is secured in any suitable manner upon said shaft, and a loose sleeve 8, having a slotted arm 9', on one end thereof and a short arm 10, on the other end, provided with a pawl 11, adapted to engage said ratchetio rolate the shaft, is held in operative position shaft 4., is outwardly beremovably seon the outer end of said shaft bya fixed A second pawl 13, is secured COllaf upon said bracket 6, and engages the ratchet to prevent reverse rotation of the shaft.

As shown in Fig. 3, the motor comprises a cylinder 14, provided with channels loand 16, in its upper and lower ends respectively, and an inlet 17, in its sideadapted to be connected in any suitable air or steam line by means of an inlet pipe 18. A cylinder head 19, is threaded on one end of the cylinder and a collar 20, is threaded thereon and against a gland 21, to afford a suitable connection to prevent leakage from the cylinder. The other end of the cylinder is provided with a head 22, which may be integral with the cylinder or threaded within the same, as shown, and provided with screws 23, or other suitable means tolock the same in position.

A piston rod 24, extends through the collar 20, and cylinder head 19, into the cylinder, and is provided on its inner end with a piston 25, having an integral piston head 26, at one end thereof, and a similar piston head 27, threaded on the reduced end 28, thereof. Piston rings 29 and 80, are provided on said piston heads 26 and 27 respectively, to bear against the cylinder by virtue The piston 25, is provided at approximately its center with a 31, and the piston rod bored to afford a longiday A ratchet wheel 7, a,

tudinal passage 32, connected with said transverse passage to afford an exhaust to the air. As shown, an induction passage 33, extends longitudinally through the piston head 26, and piston 25, to a point near the piston head 27, and connected therewith are ransverse induction and eduction ports 34 and 35, respectively. A corresponding in duction passage 36, extends through the piston head 27 and piston head to a point near the piston 26, and is similarly provided with induction and eduction ports 37 and 38 respectively.

A cylindric slide valve having heads 39 and 40, connected by a wall 41, affording a steam chest or pressure chamber Z, is slidably secured upon the piston 25, between the piston heads 26 and 27 and, as shown, piston rings 42 and 43, are secured in said heads 39 and 40, respectively to bear against the cylinder. The heads 39 and 40, are provided with channels 44 and 45, respectively, having induction ports 46, communicating with the chamber Z. Said channels 44 and 45, are adapted to coincide with the induction ports 37 and 34, respectively, at the respective periods that the steam is admitted behind the piston heads 26 and 27 As shown, the wall 41, is provided with a channel 47, adapted to communicate with the eduction ports 38 and 35, during the respective periods of exhaust from behind the respective piston heads 26 and 27 in the cylinder.

As shown in Fig. 1, the piston rod 24, is provided on its outer end with a yoke 48, and pin 49, which engages in the slot in the long arm 9, of the sleeve 8 to reciprocate the arm with the travel of the piston.

The operation is as follows: In the position shown in Fig. 3, the piston is at the limit of its return stroke. The head 39, of the valve has just passed the inlet 17 and thereby momentarily shut off the inlet of air to the chamber. When the piston is at this position the chamber it, behind the piston head 26, the passages 33 and 36, and the chamber Z, are completely filled with compressed air. As soon as the piston reaches this position, the air in the inlet is forced against the beveled edges of the heads 26 and 39, and forces the valve to slide against the piston head 27 and thereby cuts off communication between the induction port 34, and the passage 36, and simultaneously opens communication between the eduction port 35, and the channel 47, to exhaust the air through the transverse passage 31, and into the atmosphere through the longitudinal passage 32. When the valve is in this position the passage 44, com municates directly with the induction port 37 and, inasmuch as the chamber Z, is still filled with compressed air, the air rushes through port 37, and passage 36, and beneath the piston head 27 and exerts sulficient pressure behind the same to force the piston and valve outwardly until the head 39, of the valve passes the inlet 17 and thereby permits the free inflow of air into the chamber Z, from which it is led, as before described, behind the piston head 27, until the piston reaches approximately the outer limit of its stroke. The operation is then reversed. The air from the inlet is forced against the beveled edges of the heads 27 and 40, to force the valve against the head 26, and thereby cut off communication between the induction the passage 44, and simultaneously open communication between the eduction port 38, and the channel 47, to discharge the air from the chamber y, behind the piston head 27, through the same, and the passages 31 and 32, and permit the compressed air in the chamber Z, to enter into the chamber w, behind the piston head 26, and thereby give the piston the initial movement necessary to carry the head 40, of the valve past the inlet 17, to permit the inlet of air under pressure from the same into the chamber Z.

The movement of the piston and piston rod reciprocates the arms 9 and 10, on the loose sleeve 8, and thereby rotates the driving shaft 4, by the engagement of the pawl 11, upon the ratchet 7, which is rigidly secured upon the shaft.

It is obvious from the construction described that the device will operate as well in a horizontal position as in a vertical position, and although the applicant has preferred to describe the same in connection with a lubricator, it is obvious that the device may be used for driving many devices other than that described.

Of course, many details of construction may be varied, and I therefore do not desire to limit the patent to be granted on this application otherwise than necessitated by the prior art.

1 claim as my invention:

A device of the class described, comprising a cylinder having a single inlet in the side thereof, a cylinder head on each end thereof, a longitudinally bored piston rod extending through one of said heads and into said cylinder, a piston provided with an exhaust passage communicating with said bore in said piston rod, a piston head on each end of said piston, an induction passage extending through each piston head and into the piston, separate induction and eduction ports communicating with said passages, a cylindrical valve adapted to slide between the piston heads and provided with inlet passages adapted to communicate with the respective induction ports in the induction passages and operating in con port 37, and

junction with said cylinder heads momen- In testimony whereof I have hereunto tarily to cut off the ingress of the comsubscribed my name in the presence of two pressed air to said cylinder, and a channel subscribing Witnesses.

adapted to communicate With the respective THOMAS A. DELANEY. eduction ports in the induction passages to Vitnesses:

permit the exhaust of air through the pas- LAWRENCE REIBSTEIN,

sages in the piston and piston rod. CHARLES XV. HILLS, J1".

Gopies of this patent may be obtainedifor five cents each, by addressing the Commissioner of IPatents, Washington, D. G. 

